body {
				background: linear-gradient(to bottom, white 0%, lightblue 100%);
				background-repeat: no-repeat;
				background-attachment: fixed;
				/* 以下是为了兼容不同浏览器 */
				-webkit-background: linear-gradient(to bottom, white 0%, lightblue 100%);
				-moz-background: linear-gradient(to bottom, white 0%, lightblue 100%);
				-o-background: linear-gradient(to bottom, white 0%, lightblue 100%);
			}

			#left_choice_menu {
				position: fixed;
				top: 3%;
				left: 1%;
				width: 250px;
				height: 94%;
				background-color: white;
				border-radius: 10px;
				box-shadow: 3px 3px 8px lightgray;
			}

			#center_show_choice {
				position: fixed;
				top: 3%;
				left: calc(3vw + 240px);
				width: calc(100vw - 240px - 4vw);
				height: 94%;
				background-color: white;
				border-radius: 10px;
				box-shadow: 3px 3px 8px lightgray;
			}

			#left_choice_menu_logo_contral {
				margin-top: 30px;
				margin-bottom: 30px;
				text-align: center;
			}

			#left_choice_menu_logo {
				max-width: 90px;

			}

			#left_choice_menu_option {
				margin-top: 40px;
				text-align: center;
			}

			.left_choice_menu_option_alldiv {
				cursor: pointer;
				margin-top: 30px;
				margin-bottom: 30px;
				margin-left: 50px;
				margin-right: 50px;
				padding-top: 10px;
				padding-bottom: 10px;
				border-radius: 8px;
			}

			.left_choice_menu_option_allimg {
				max-width: 20px;
			}

			.left_choice_menu_option_allspan {
				margin-left: 10px;
				font-size: 20px;
				font-weight: bold;
			}

			.click {
				cursor: pointer;
				margin-top: 30px;
				margin-bottom: 30px;
				margin-left: 50px;
				margin-right: 50px;
				padding-top: 10px;
				padding-bottom: 10px;
				border-radius: 8px;
				background-color: #f1f0f0;
			}

			#zhbb {
				background-color: white;
				margin: 2%;
				margin-bottom: 1%;
				width: 96%;
				height: 45%;
				border-radius: 14px;
				box-shadow: 2px 2px 8px lightgray;
			}

			#zh {
				display: flex;
				align-items: center;
			}

			#head {
				max-width: 150px;
				border-radius: 100px;
				margin-left: 40px;

			}
			
			#pppp{
				all: unset;
				cursor: pointer;
				font-size: 20px;
				padding-top: 8px;
				padding-bottom: 8px;
				padding-left: 16px;
				padding-right: 16px;
				border-radius: 8px;
				box-shadow: 2px 2px 8px lightgray;
				background-color:white;
				color: black;
				
			}
			
			#pppp:hover{
				background-color: #f3f3f3;
			}
			
			#shadow {
				/*display:none;*/
				position: absolute;
				width: 100%;
				height: 100%;
				background-color: #43414154;
			}
			#top_left_div {
				/*display:none;*/
				
				position: absolute;
				width: 800px;
				height: 350px;
				background-color: white;
				top: 50vh;
				/* 使用视口单位 vh 实现垂直居中 */
				left: 50vw;
				/* 使用视口单位 vw 实现水平居中 */
				transform: translate(-50%, -50%);
				border-radius: 12px;
				overflow: hidden;
			}
			.rjpzcon {
				margin-top:12px;
				margin-bottom:12px;
			}
			.rjpzt{
				margin-left:38px;
				font-weight:bold;
				text-shadow: 2px 2px 1px lightgray;
				vertical-align: top;
			}
			
			.rjpz {
				font-size:22px;
				margin-left: 14px;
				border: 1px solid #f1f0f0;
				border-radius: 11px;
				box-shadow: 2px 2px 1px lightgray;
			}
			
			.rjpz:hover {
				border: 1px solid skyblue;
			}
			
			#quxiao{
				cursor: pointer;
				margin-right:30px;
				font-size: 20px;
				padding-top: 6px;
				padding-bottom: 6px;
				padding-left: 16px;
				padding-right: 16px;
				border-radius: 8px;
				box-shadow: 2px 2px 8px lightgray;
				background-color: white;
				color: black;
			}
			
			
			#quxiao:hover{
				background-color: #f3f3f3;
			}
			
			#queren{
				cursor: pointer;
				margin-right:30px;
				font-size: 20px;
				padding-top: 6px;
				padding-bottom: 6px;
				padding-left: 16px;
				padding-right: 16px;
				border-radius: 8px;
				box-shadow: 2px 2px 8px lightgray;
				background-color: #06a4ff99;
				color: white;
			}
			
			#queren:hover{
				background-color: #0ba9f0;
			}

			.blues{
				cursor: pointer;
				margin-right:30px;
				font-size: 10px;
				padding-top: 6px;
				padding-bottom: 6px;
				padding-left: 16px;
				padding-right: 16px;
				border-radius: 8px;
				box-shadow: 2px 2px 8px lightgray;
				background-color: #06a4ff99;
				color: white;
			}
			
			.blues:hover{
				background-color: #0ba9f0;
			}